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Issue No. 05 - May (1988 vol. 37)
ISSN: 0018-9340
pp: 548-561
Two concurrent error detection (CED) schemes are proposed for N-point fast Fourier transform (FFT) networks that consists of log/sub 2/N stages with N/2 two-point butterfly modules for each stage. The method assumes that failures are confined to a single complex multiplier or adder or to one input or output set of lines. Such a fault model covers a broad class of faults. It is shown that only a
error location; fault tolerant FFT networks; concurrent error detection; N-point fast Fourier transform; log/sub 2/N stages; N/2 two-point butterfly modules; fault model; fault-secure results; data retry technique; roundoff errors; functional errors; physical failures; time-redundancy method; negligible hardware overhead; throughput; automatic testing; digital arithmetic; digital integrated circuits; error analysis; error detection; fast Fourier transforms; fault location; fault tolerant computing; integrated circuit testing; parallel architectures; redundancy; roundoff errors.

J. Jou and J. Abraham, "Fault-Tolerant FFT Networks," in IEEE Transactions on Computers, vol. 37, no. , pp. 548-561, 1988.
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